flat
/ˈflat/
adjective
lying at full length or spread out upon the ground : prostrate
utterly ruined or destroyed
resting with a surface against something
The soldiers were lying flat on the ground.
buildings flat from the blast
noun
a level surface of land —usually used in plural
a stretch of land without obstacles; especially : a track or course for a flat race —usually used with the
a flat part or surface
adverb
in a flat manner : directly, positively
in a complete manner : absolutely
below the proper musical pitch